​31. It was Oh’s idea for Cristina to have an emotional breakdown, which led Rhimes to write the scene after Cristina loses her unborn baby and can’t stop crying in her hospital bed.

32. Rhimes enlisted the help of Chandra Wilson, Sara Ramirez, and Kevin McKidd to put on a concert for some ABC producers to convince them that infamous musical episode in Season 7 would be a great idea.

33. In the musical episode, when Callie was singing over her injured body, they used a double and then just digitally mapped Ramirez’s face onto the body.

​ 34. Though most of Grey’s Anatomy is shot on a sound stage in Los Angeles, Meredith’s childhood home is a real house located in Queen Anne Hill in Seattle.

35. The roof of local ABC affiliate in Seattle, KOMO-TV, is used to film scenes when helicopters land on the roof of the hospital.

36. Jesse Williams (Dr. Jackson Avery) was a teacher before being cast on the show.

37. When Lexie was killed in the plane crash in Season 8, Leigh stayed under the actual wreckage for the better part of two straight days to film the scene.

​38. When Arizona lost her leg, Capshaw “walked on a prosthetic with [her] own leg tied behind [her]” and editors digitally erased any overlap.

39. All the medical storylines are found in medical journals that the writers read or from stories that viewers send in that they find interesting.

40. When cast members “perform” a specific medical procedure during an episode, they are given tons of material to understand how it would be done in real life.